[asterisk-bugs] [Asterisk 0010915]: Problems when doing an attended and unattended transfer with Thomson Phones

[noreply at bugs.digium.com]

A NOTE has been added to this issue. 
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http://bugs.digium.com/view.php?id=10915 
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Reported By:                ramonpeek
Assigned To:                
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Project:                    Asterisk
Issue ID:                   10915
Category:                   Channels/General
Reproducibility:            always
Severity:                   major
Priority:                   normal
Status:                     new
Asterisk Version:           1.4.12.1  
SVN Branch (only for SVN checkouts, not tarball releases): N/A  
SVN Revision (number only!):  
Disclaimer on File?:        N/A 
Request Review:              
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Date Submitted:             10-08-2007 11:34 CDT
Last Modified:              10-08-2007 12:03 CDT
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Summary:                    Problems when doing an attended and unattended
transfer with Thomson Phones
Description: 
When doing an attended transfer (party A -> B -> C) the phones A & B start
ringing after they finished the active call, but there is no audio
(ghostcalls)

When doing an unattended transfer the phone B (transferrer) start ringing
immediatly after transfering the party A to C.
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---------------------------------------------------------------------- 
 ramonpeek - 10-08-07 12:03  
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When looking at issue 10868 I can see the same thing happening.
(2x INVITE to put the active call-leg on-hold) 

However, when I look at the traces made during an unattended transfer I
can see that putting the call-leg back into the MOH works fine. But that
Asterisk starts re-inviting the transferrer after he has already
transferred the RTP stream back to asterisk... which I now feel might be
incorrect.

After that it's clear to see that the phone doesn't expect the message and
ignores it, however asterisk start retransmitting the request after the T1
timer expires and thus a call is initiated with no RTP stream... (ghost
calls.)

I am starting to believe that the problem is really occuring in an earlier
state than where the current patch to rtp.c is written (in issue 10868).
Cause in my system too this patch solves the problem only partially on
attended transfer, but the problem still exists on unattended transfers. 

Issue History 
Date Modified   Username       Field                    Change               
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10-08-07 12:03  ramonpeek      Note Added: 0071649                          
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